<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>

<body>
    <form action="/student_manager_demo/userServlet" method="post">
        用户名：<input type="text"  name="username"/><br/>
        密码：<input type="password"  name="passsword"/><br/>
        <input type="submit" value="登录"/><br/>
    </form>

</body>
</html>